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Explore what powers the human brain, body, and spirit.
It's all about preparation.
Scientists can see it in your brainwaves.
If you don't have it, there's hope.
What happens when the two sides can't communicate?
A little failure is good for you.
Its effects on sleep and sight are different.
Have your cake and eat it too.
You're more distracted than you think.
It's more effective than compliments.